<?php
/**
 * Laconica, the distributed open-source microblogging tool
 *
 * Handler for posting new notices
 *
 * PHP version 5
 *
 * LICENCE: This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * @category  Personal
 * @package   Laconica
 * @author    Evan Prodromou <evan@controlyourself.ca>
 * @author    Zach Copley <zach@controlyourself.ca>
 * @author    Sarven Capadisli <csarven@controlyourself.ca>
 * @copyright 2008-2009 Control Yourself, Inc.
 * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
 * @link      http://laconi.ca/
 */

if (!defined('LACONICA')) {
    exit(1);
}

require_once INSTALLDIR.'/lib/noticelist.php';

/**
 * Action for posting new notices
 *
 * @category Personal
 * @package  Laconica
 * @author   Evan Prodromou <evan@controlyourself.ca>
 * @author   Zach Copley <zach@controlyourself.ca>
 * @author   Sarven Capadisli <csarven@controlyourself.ca>
 * @license  http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
 * @link     http://laconi.ca/
 */

class ImageuploadAction extends Action
{
    /**
     * Error message, if any
     */

    var $msg = null;
    
    var $imagefile = null;
    var $filename = null;


    /**
     * Title of the page
     *
     * Note that this usually doesn't get called unless something went wrong
     *
     * @return string page title
     */

    function title()
    {
        return _('Đăng ảnh lên Tôi24h');
    }

    /**
     * Handle input, produce output
     *
     * Switches based on GET or POST method. On GET, shows a form
     * for posting a notice. On POST, saves the results of that form.
     *
     * Results may be a full page, or just a single notice list item,
     * depending on whether AJAX was requested.
     *
     * @param array $args $_REQUEST contents
     *
     * @return void
     */

    function handle($args)
    {
        parent::handle($args);

        if (!common_logged_in()) {
            $this->clientError(_('Not logged in.'));
        } else if ($_SERVER['REQUEST_METHOD'] == 'POST') {

            // CSRF protection
            $token = $this->trimmed('token');
            if (!$token || $token != common_session_token()) {
                $this->clientError(_('There was a problem with your session token. '.
                                     'Try again, please.'));
                return;
            }
            $this->saveNewImage();
        } else {
            $this->showForm();
        }
    }

    /**
     * Save a new notice, based on arguments
     *
     * If successful, will show the notice, or return an Ajax-y result.
     * If not, it will show an error message -- possibly Ajax-y.
     *
     * Also, if the notice input looks like a command, it will run the
     * command and show the results -- again, possibly ajaxy.
     *
     * @return void
     */

    function saveNewImage()
    {
        $user = common_current_user();
        try {
            $imagefile = ImageFile::fromUpload('image_notice_upload');
        } catch (Exception $e) {
            $this->showForm($e->getMessage());
            return;
        }
      
        $filename = image::filename($user->id,
                                     image_type_to_extension($imagefile->type),
                                     null,
                                     'tmp'.common_timestamp());

                                     
        $filepath = image::path($filename);
                
        $image = image::saveNew($user->id, $filename);
        move_uploaded_file($imagefile->filepath, $filepath);  

        if (is_string($image)) {
            $this->showForm($image);
            return;
        }
        else
        {
            $linkimage='[img]'.image::url($filename).'[/img]';
            $this->showFormOk($linkimage);
            return;
        }

    }

    /**
     * Show an Ajax-y error message
     *
     * Goes back to the browser, where it's shown in a popup.
     *
     * @param string $msg Message to show
     *
     * @return void
     */

    function ajaxErrorMsg($msg)
    {
/*        $this->startHTML('text/xml;charset=utf-8', true);
        $this->elementStart('head');
        $this->element('title', null, _('Ajax Error'));
        $this->elementEnd('head');
        $this->elementStart('body');
        $this->element('p', array('id' => 'error'), $msg);
        $this->elementEnd('body');
        $this->elementEnd('html');*/
         echo '{ message: "' . $msg . '" }';
    }
    
    function ajaxOkMsg($msg)
    {
/*        $this->startHTML('text/xml;charset=utf-8', true);
        $this->elementStart('head');
        $this->element('title', null, _('Ajax Error'));
        $this->elementEnd('head');
        $this->elementStart('body');
        $this->element('p', array('id' => 'imgupload'), $msg);
        $this->elementEnd('body');
        $this->elementEnd('html');*/
        echo '{ message: "' . $msg . '" }';
    }

    /**
     * Formerly page output
     *
     * This used to be the whole page output; now that's been largely
     * subsumed by showPage. So this just stores an error message, if
     * it was passed, and calls showPage.
     *
     * Note that since we started doing Ajax output, this page is rarely
     * seen.
     *
     * @param string $msg An error message, if any
     *
     * @return void
     */

    function showForm($msg=null)
    {
        if ($msg && $this->boolean('ajax')) {
            $this->ajaxErrorMsg($msg);
            return;
        }

        $this->msg = $msg;
        $this->showPage();
    }
    
    function showFormOk($msg=null)
    {
        if ($msg && $this->boolean('ajax')) {
            $this->ajaxOkMsg($msg);
            return;
        }

        $this->msg = $msg;
        $this->showPage();
    }


    /**
     * Overload for replies or bad results
     *
     * We show content in the notice form if there were replies or results.
     *
     * @return void
     */

    function showNoticeForm()
    {
/*        $content = $this->trimmed('status_textarea');
        if (!$content) {
            $replyto = $this->trimmed('replyto');
            $profile = Profile::staticGet('nickname', $replyto);
            if ($profile) {
                $content = '@' . $profile->nickname . ' ';
            }
        }

        $notice_form = new NoticeForm($this, $content);
        $notice_form->show();*/
    }

    /**
     * Show an error message
     *
     * Shows an error message if there is one.
     *
     * @return void
     *
     * @todo maybe show some instructions?
     */

    function showPageNotice()
    {
        if ($this->msg) {
            $this->element('p', array('id' => 'error'), $this->msg);
        }
    }

    /**
     * Output a notice
     *
     * Used to generate the notice code for Ajax results.
     *
     * @param Notice $notice Notice that was saved
     *
     * @return void
     */

    function showNotice($notice)
    {
/*        $nli = new NoticeListItem($notice, $this);
        $nli->show();*/
    }
}
